* lib/getoptlong.rb (set_options): ensure that the type of argument is

Array, restoring this check that was deleted at r10239.  This caused
  rubyspec error.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@26469 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,9 @@
+Fri Jan 29 22:49:21 2010  Yusuke Endoh  <mame@tsg.ne.jp>
+
+	* lib/getoptlong.rb (set_options): ensure that the type of argument is
+	  Array, restoring this check that was deleted at r10239.  This caused
+	  rubyspec error.
+
 Fri Jan 29 12:59:33 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* configure.in (mingw): needs $(DEFFILE) for extension libraries.

lib/getoptlong.rb

@@ -282,8 +282,11 @@ class GetoptLong
     @canonical_names.clear
     @argument_flags.clear
 
-    arguments.each do |*arg|
-      arg = arg.first # TODO: YARV Hack
+    arguments.each do |arg|
+      if !arg.is_a?(Array)
+       raise ArgumentError, "the option list contains non-Array argument"
+      end
+
       #
       # Find an argument flag and it set to `argument_flag'.
       #